Pump or engine



June 3, 11930. A. M. 'FREELAND PUMP OR ENGINE Filed Sept. 27

W v M j Patented June 3, 1930 UNITED STATES. PATENT OFFICE mna'r u. ramannor CEIQAG/O, ILLINOIS, assreuon T cam. :anwm, or on:-

- caeo, rumors PUMP 0B ENGINE Application-filed September 27, 1928. Serial No. 808,734.

This invention relates to improvements in pumps or engines, particularly adapted, though not,necessarily limited in its use as a compressor or in connection with pressure refrigerating systemsand the like, and one of the objects of the invention is to provide an 4 improved pump or engine of the reciprocating piston ty e, the pistons and cylinders being reciproca le one with respect to the other and in which any desired number of co-operating piston and cylinder elements may be em loyed. a h I o the attainment of these ends and the accomplishment of other new and useful ob- 'jec-ts as will ap ear, the invention consists in the features 0 novelty in substantially the construction, combination and arrangement of the several arts hereinafter more fully View of a ump or .engine of thischaracterv I view taken on line 2-2, Figure 1, and looking described and c aimed and shown in the ac-- companying drawingillustrating this invention, and in which r Figure 1 is a vertical'longitud-ina'l sectional constructe of th s invention.

Figure 2 1s a transverse, vertlcal, sectional in accordance with the principles in the direction of the arrows.

Figure3 is a vertical, transverse, sectional view taken on line 3-3, Figure 1, looking in the direction of the arrows.

Referring-more particularly to the drawing the numeral 10 designates a casing which ma be of any desired size and configuration an may be provided with an opening 11 having a removable closure 12 by means of which latter access may be had to the interior of the casing. 1 One end 13 of the casing preferably constltutes a valve plate having ports 14+15 therein, and which plate is 'hel against rotation by means of suitable fastening screws 16. Su ported b the plate 13 is a-hollow hearing 1 in whic a shaft 18 is journaled', the,

bearing being preferably of an internal diamis. deflected or 18 so that the axis of the 'ortion 34 will be cured to this projecting end of the shaft is a fan or blower 25 which co-operates with fins 26 on the valve plate' 13 for cooling the structure.

The shaft 18 projects for a considerable,

distance into the casing 10 and secured to the shaft for rotation therewith and within the casin is a member 27:.which is rovided with cylinders 28, any number of w ich cylinders 'maygbe provided. In the present form'of the invention three of such cylinders are provided and the cylinders are provided with coolin fins. or ribs 29.

Reciprocable in each of the cylinders 28 is a piston 30 and the cylinders are ported, each cylinder being provided with a port 31, preferably in the bottom thereof, which successively communicate with the ports Hand 15 in the valve plate 13. I

At'the other end of the casing 10 there is provided a bearin 32 which supports a stationar shaft 33. I latera ly displaced with respect to the axis of the shaft 18 and the-shafts 33 and 18 are also spaced from each other in directions lengthwise of the shafts. One end34 of the shaft 33 is disposedwithin the casin 10 and ent laterally toward t e shaft inclined to the axes of thes afts 1833.

he axis of the shaft 33 is.

Rotatably mounted upon the 'ortion 34 of the shaft'33 is an. element 35, all bearings '3637-bein g interposed between the element 35 and the shaft portion 34, the element 35 and the bearings36-37 being secured in position by means of a suitable fastening nut 38.

Links 39 constituting piston rods, one for each of the pistons 30, are pivotally connected by one end as at 40 with the element 35 and at their other end as at 41 with the respective pistons 30. The connection 41 may be of any suitable construction but preferably the link or piston rod 39 terminates in a ball shaped extremity secured within a bearing 42 carried by the piston 30.

rotate upon its bearings and during the rotation o these parts there will be effected a reciprocatory movement of the pistons within the cylinders 28. i

The air or fluid to be operated upon in the cylinders 28, or to be compressed, is supplied to the cylinders through an inlet opening 43 in the valve plate 13 and has communication with the port 14 which is elongated and may be of any desired length according to the number of cylinders employed. As the cylinders 13-rotate the ports 31 therein will successively commumcate with the port 14 to receive the fluid to be operated upon. This will occur during the time that the pistons are moving backwardly in the cylinders, creating a suction in the cylinder's. At the time when the pistons 30 start to move forward on the compression stroke the ports 31 of the respective cylinders will pass out of communication with the ort 14 and the ports 31 will be closed by a p at portion 44 of the valve plate. Just before the two the completion 'of the movement of the piston int c compression direction or before the piston 30 reaches the limit of its inward movement the ports 31 will pass into the communication with the ort 15 in the valve plate 13, and with which atter port an outlet port 45- in the valve plate 13 has communi cation to convey the desired point of use.

Thus it will be 'seen that there will be an alternate intake, compression and discharge in the successive cylinders.

The ports 31 in the cylinders are located, prefera ly at a considerable distance from the axes of rotation of the cylinders as are also the rts 14 and '15, and in order to hold the memb r 27 in contact with the valve plate 13 so as to maintain a tight 'oint between the spring-21 is provided. The stress of the sp 21 tends to force the bearing 20 against a dh fiar 26 carried by the shaft 18 and as then ring 21 also 0 tes against the shoulder-"'28, it be manife'stthat thethe compressed charge to.

spring will not only hold the parts firmly in contact, but will compensate any wear between the movable parts.

If for any reasonit is desired to change the stroke of the istons with respect to t e end of the cylin er, the shaft 33 may be adjusted in a direction lengthwise of its axis. To that end this shaft is mounted loosely in the bearing 32, but is held against rotation by means of a suitable fastening device, such as a screw 47 the end of which enters a groove 48 in the shaft. Threaded into the bearing 32 is an adjustable member 49 which is held in its adjusted position by means of a lock nut 50. A screw 51 is provided with oppositely arranged threads 5253. The threads 53 engage a threaded socket in the end of the shaft 33 and the threads 52 engage internal threads in the member 49. Thus, it will be seen that by adjusting the screw 51 the shaft 33 may be ad.- justed and when the proper adjustment has been obtained, the member 49 may be adjusted so as to, en a e the end of the shaft 33, after which the foe nut may be adjusted.

If desired, an oil passage 54 may be provided, forming communication between the chamber 10 and the bearing 17 for lubrication.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of theseveral parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is 1. In combination, a ported valve plate,

a rotary member having cylinders arranged to successively communicate with the ports of said plate, pistons in the cylinders, a rotatable element, piston rods pivotally contatable element, pistonrods pivotally connected with said element'and-the respective pistons, and means mounting said element or rotation about a. stationary axis radially removed from and inclined to the, axis of rotation of said cylinders, whereby the rotation of the. cylinders will cause a reciprocatory movement of the pistons.

3. In combination, a ported valve plate,

arotary member-having cylinders arranged 1 to successively communicate withthe ports of said plate, pistons in the cylinders, a rotatable element, piston rods pivotally connected with said elementand' the respective pistons, means mounting said element for rotation about an axis inclined to and 'laterally spaced from the axis of rotation of said cyl nders, whereby the rotation of the cylinders will cause a reciprocatory movement of the pistons, and means for adjusting said element in directions len' thwise of the axis of said rotary member and for maintain.-

ing said element in such adjusted positlon.

4. In combination, a ported valve plate, a rotary member havin 1 cylinders arranged to successively communicate with the ports of said plate, pistons in the cylinders, a rotatable element, piston rods pivotally connected with said element and the respective pistons, means mountlng said element for rotation about an axis radially removed from and 1nclined to the axis of rotation of said cylinders,

whereby a rotation of the cylinders will cause a reciprocating movement of the pistons in the cylinders, and means for adjusting said element in directions lengthwise of the axis of rotation ofsaid cylinders and for maintaining the same in its adjusted position.

' 5. In combination, a ported valve plate, a rotary member having cylinders arranged to successivelycommunicate with the ports of said plate, pistons in the cylinders, a rotatable element, piston rods pivotally connected with said element and the respective pistons, means mounting said element for rotation about a stationary axis inclined to and later-- ally s aced fromthe axis of rotation of said cylint 'ers, whereby the rotation of the cylinders will cause a reciproca'tory movement of the pistons, and means for holding the c linders against thesaid valve plate and a so operating to compensate wear therebetween.

' 6.' In combination, 'a ported valve plate, a rotary member having cylinders arranged to- -successively communicate with the ports of said plate, pistons in the cylinders, a rotatable element, piston rods pivotally connected with saidelement and the respective pistons,

the pistons, and resilient means operatin to cylinders andrl'aterally displaced with respect means mounting said element for rotation about a stationary axis inclined to and later:

ally s aced from the axis of rotationof said cylin ers, whereby the rotation of the cylin-' ders will cause a reciprocatory movement of hold the cylinders against the said valve p ate and to also compensate weartherebetween.

, 7. In combination, a ported valve plate, a rotary member havin cylinders arranged to successively communicate. with the ports of aring element mounted for rotation on an axis inclined to the axis of rotation of said ttfthe axis of rotation of the cylinders, piston rods connected with said element and the "re- -ad]'ustment lengt said late, pistons in the cylinders, a rotatable, all e other, a member supported by one of the shafts and having ported cylinders, a ported valve plate, means for rotating the last said shaft to. cause a relative rotation of said cylinders and valve plate one with relation to the other stationary means for supporting the other of said shafts, the axis of the last said shaft being inclined to the axis of the first said shaft, an element rotatably mounted on the inclined portion of the second recited shaft, and piston rods connected with said element and the res ective istons whereb a relative rotation o the cy inders and va ve plate will cause the said pistons to reciprocate in their respective cylinders. V 9. In combination, a air of fixed shafts laterally and longitudina ly spaced from each other, a member supported by one of the shafts and having ported cylinders, a ported valve plate, means for rotating the last said shaft to cause a relative rotation of said cylinders and valve plate one with relation to.

the other, stationary means for supporting the other of said shafts, the axis of the last said shaft being inclined to the axis of the first said shaft, an element rotatably mounted-on shaft, piston rods connected with. said element'and the respective pistons whereby a relative rotation of the cylinders and valve plate will cause the said pistons to reciprocate in their respective cylinders, and means for bodily adjusting said element in directhe inclined portion ofthe second "recited plate, means connecting one of the said arts with the shaft whereby the rotation o the shaft will cause a relative rotation of said plateand member, pistons in the cylinders, a stationary shaft spaced from the first said shaft both laterally and longitudinally, means supporting wise of the axis thereof, a portionof the stationary shaft being inclined with respect to the first said shaft, an element rotatably su ported by said inclined p0 ion and links pi irotally connected with said ele: ment andthe respective pistons.

' 11; In combination,'a rota member hav-.

.ing ported cylinders, aporte' valve member co-operatin'gtherewith, .a rotary shaft to which one of said members is connected, pistons in'the cylinders, a stationar shaft latsaid stationary shaft for erally spaced from. thefirst said s aft, a. sup- 1 30 port for the stationary shaft, a'portion of said stationary shaft being inclined with respect to both of the shafts, an element rotatably mounted on said inclined portion, piston rods connectin said element with the respective pistons w ereby rotation of the first saidshaft will cause the istons to reciprocate in the cglindera'an'adjustin element for adjusting t e stationary shaft 1n directions lengthwise of its axis and with respect to its.

support, and locking means for the adjusting element. a

In testimony whereof I have signed my name to this specification, on this 19th day of September, A. D. 1928,

ALBERT M. FREELAND. 

